[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-335) NullPointerException if user quikcly decides to click a different link or button before the page renders

[Gavin King (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBSEAM-335?page=comments#action_12351472 ] 
            
Gavin King commented on JBSEAM-335:
-----------------------------------

Yes, you need Seam 1.1.

> NullPointerException if user quikcly decides to click a different link or button before the page renders
> --------------------------------------------------------------------------------------------------------
>
>                 Key: JBSEAM-335
>                 URL: http://jira.jboss.com/jira/browse/JBSEAM-335
>             Project: JBoss Seam
>          Issue Type: Bug
>          Components: JSF
>         Environment: Seam 1.0.1.GA. JBoss 4.0.4, Windows XP, Facelets, MyFaces, Hibernate
>            Reporter: Keith Naas
>         Assigned To: Gavin King
>            Priority: Critical
>             Fix For: 1.1.0.BETA1
>
>
> When a user is on one of our screens, they can decide to click a link before the next page loads.  Sometimes, when this do this quickly enough, it causes a NullPointerException in Manager.touchConversationStack at line 181.  Somehow, the currentConversationEntry is null and it breaks when it executes getCurrentConversationEntry().touch().  
> I tried unsuccessfully to duplicate this scenario on the Hotel and DVD Store demos hosted on JBoss.  
> Stack Trace
> java.lang.NullPointerException
> 	at org.jboss.seam.core.Manager.touchConversationStack(Manager.java:181)
> 	at org.jboss.seam.core.Manager.storeConversation(Manager.java:368)
> 	at org.jboss.seam.jsf.AbstractSeamPhaseListener.storeAnyConversationContext(AbstractSeamPhaseListener.java:69)
> 	at org.jboss.seam.jsf.SeamStateManager.saveSerializedView(SeamStateManager.java:45)
> 	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:578)
> 	at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
> 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> .....

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